16 December - Stay alert to pesticide risks

Pesticide exposure: Horticulture continues to be a safe place to work.

In 2010-11, we did have a few incidents of pesticide exposure - 34 were herbicides, 25 fungicides and eight insecticides. Of 38 ill-health complaints, 78 per cent came from the agriculture sector and only two were in horticulture (four per cent). Crop spraying accounted for 68 per cent of complaints, weed control 18 per cent, orchard spraying six per cent and storage and amenity spraying two per cent each. The remaining four per cent occurred in other pest control situations. Of the spraying equipment recorded in these incidents, boom sprayers accounted for 60 per cent, knapsack sprayers for 12 per cent and ATVs for six per cent.

Rust: This disease can attack Mahonia 'Apollo' during December. Control with Bumper 250EC (EoA 2009-0707) or Signum (EoA 2009-1842).

Planning: Check through your spray programmes and use the HSE/CRD website (www.pesticides.gov.uk) as a reference tool for up-to-date product approvals and to download copies of extensions of authorisation. Integrating biological controls where practical next season will reduce the risk of resistance. Check growing media recipes and the amount and type of fertilisers incorporated into your choice of growing media - have they done the job this season? Consider expanding your liquid feeding programme to include supplementary feeding of plants that you know become iron, nitrogen or calcium deficient during the growing season.

Conifers: Certis Spraying Oil can be applied to plants or hedges that suffered insect damage earlier this year but avoid frost before and after application. Good foliage penetration will be required for some conifer species. Include ornamental trees and Picea in the spray programme.

Botrytis: Maintain a close watch on pot-thick, evergreen crops. Open doors and vents when temperatures allow.

Insect control: Check closely for leaf hoppers, aphids, mites and whitefly. Control by rapid knockdown products such as Majestik or SB Plant Invigorator. Avoid synthetic pyrethrins such as Decis if you are going to use biological control next year and avoid frost before and after applications.

Liverwort: Clean up liverwort on cleared growing beds by applying Mogeton, Butisan S, Chikara or products containing lenacil.

Have you registered with us yet?

Register now to enjoy more articles and free email bulletins

Sign up now
Already registered?
Sign in

Before commenting please read our rules for commenting on articles.

If you see a comment you find offensive, you can flag it as inappropriate. In the top right-hand corner of an individual comment, you will see 'flag as inappropriate'. Clicking this prompts us to review the comment. For further information see our rules for commenting on articles.

comments powered by Disqus

Read These Next



These compact, brightly coloured flowers can be very attractive for impulse sales, notes Miranda Kimberley.

Fertilisers Special Report - invaluable nutrition

Fertilisers Special Report - invaluable nutrition

Using the right fertilisers on your crops can make all the difference when it comes to securing repeat customers, Sally Drury advises.

IPM Essen Show Preview - New look for top trade fair

IPM Essen Show Preview - New look for top trade fair

Venue modernisation will mean better display space for exhibitors at Europe's largest trade fair for the horticulture industry, says Gavin McEwan.

Opinion... Gardening needs better promotion

Opinion... Gardening needs better promotion

British horticultural firms and organisations have not been the best at working together to promote our industry.

Opinion... A wish list for unblinkered thinking

Opinion... A wish list for unblinkered thinking

Opinion... A wish list for unblinkered thinking

Opinion... A wish list for unblinkered thinking

Generations of ordinary British people have been let down by weak, visionless leaders -- politicians more engaged by the next election than our national best interest.

Follow us on:
  • Facebook
  • LinkedIn
  • Twitter
  • Google +
Horticulture Jobs
More Horticulture Jobs

Tim Edwards

Boningales Nursery chairman Tim Edwards on the business of ornamentals production

Read Tim Edwards

Ornamentals ranking

Top 30 Ornamentals Nurseries by Turnover 2017

Top 30 Ornamentals Nurseries by Turnover 2017

Tough retail pricing policies and Brexit opportunities drive the top 30 growth strategies.

Pest & Disease Tracker bulletin 

The latest pest and disease alerts, how to treat them, plus EAMU updates, sent direct to your inbox.

Sign up here

Are you a landscape supplier?

Horticulture Week Landscape Project Leads

If so, you should be receiving our new service for Horticulture Week subscribers delivering landscape project leads from live, approved, planning applications across the UK.

Peter Seabrook

Inspiration and insight from travels around the horticultural world

Read more Peter Seabrook articles